When Walt and his family relocate to Blackbird Bay, Waly thinks it's the most boring place on earth. While his twin sister, Van, likes to spend her time skateboarding, Walt prefers to hide out in his room and work on his beloved map world, Djaruba. But shortly after their arrival, Walt discovers something extraordinary: He has the ability to make maps come to life. Suddenly his new hometown doesn't seem so boring after all. And when a magical heirloom leaves Walt, his new friend Dylan, and Van stranded in the fantastical world that Walt created, he'll need to harness his new power to get them home. But things are changing. People have gone missing, and it's clear that malevolent rival to the kingdom a fellow mapmaker has nefarious plans for Walt. If he's not stopped soon, Djaruba could become nothing but a shadow of itself or, worse, gone forever. And if a mapmaker can destroy one world, could Earth be next?